Question about 1995 GMC Sierra C1500

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How do I replace the main rear engine seal on 95 gmc Sierra

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This is a one piece seal. The transmission will have to come out, remove the flywheel to gain access to the seal. You will find a flange that is held in by 5 bolts, I believe. Remove this flange, remove and install the new seal and reinstall the flange. It should be sealed around the flange to prevent leaking. The new seal should come with the necessary sealant. Use care to not damage the sealing area of the flange. Knock the old seal out and install the new one. Make sure that you lubricate the lip of the new seal before reinstalling the flange.
A good word: Use care when installing the new seal to make sure it goes in evenly all the way around. Don't just hammer it in or it will leak also. A dented or uneven seal will cause more heartaches than you want. Reinstall the flywheel and transmission and you are done. It is really good if you have a transmission jack and someone to help. It would also help to get a good automotive manual such as Haynes for reference. Good Luck, Ed

Posted on May 15, 2010

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Posted on Jan 02, 2017

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SOURCE: How do I replace the main rear engine seal on 95

you have to remove the drive shaft, the cover around the bottom of the trans. Remove the torque convertor bolts,remove the bellhousing bolts from the trans. You may have to unbolt the exhaust bolts. Slide the tans back remove the flywheel to access the oil seal.

Posted on Mar 20, 2010

Testimonial: " Thank You, I haven't installed rear main seal since they went to one piece. I am glad I didn't unhook the motor mounts and jack the engine up. "

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1 Answer

Alright so I want to know how to replace the rear main seal on my 94 gmc sierra 1500 5.7l pickup


if it is a one piece lip seal , the transmission has to come out and the flywheel/ flex plate removed
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get a workshop manual for the job
you will know what has to be done when you buy the seal

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How do I replace the main rear engine seal on 95 GMC Sierra


you have to remove the drive shaft, the cover around the bottom of the trans. Remove the torque convertor bolts,remove the bellhousing bolts from the trans. You may have to unbolt the exhaust bolts. Slide the tans back remove the flywheel to access the oil seal.

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